On Cloudultra 2 (Men's US9) vs Saucony Peregrine 15
Weight and specs compared for 2026 — and which one to choose.
Cushioned all-terrain trail shoe with Helion superfoam and Missiongrip. 289g, designed for ultrarunning and long-distance hiking on variable terrain
Full details →Aggressive trail running shoe with PWRTRAC lug outsole and rock plate, well suited to technical hiking terrain.
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On Cloudultra 2 (Men's US9) vs Saucony Peregrine 15: which should you buy?
If saving weight is your priority, the Saucony Peregrine 15 wins — at 266 g it is 23 g (8%) lighter than the On Cloudultra 2 (Men's US9) (289 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest footwear page, or browse the full gear weight database.